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The Catalan independence vote has drawn parallels with the Greek crisis of 2015 - including speculation the region could form its own currency.

During the upheaval in Greece in the summer of 2015, the spectre of a 'Grexit' was on the horizon that would have entailed it withdrawing from the eurozone.

Even before Greeks voted in a referendum against the deal laid out by its creditors, preparations were already under way to prepare for this by creating a new currency, a version of its old drachma.

In an echo of the Grexit crisis, the Catalan Government is planning contingencies so that it can go it alone, separate from the Spanish banking system. But its preparations make it different from Greece's moment...